Hard question because if we would really get rid all of the players that are not Guardiola type of players or just are getting on and they are over their peak performances we would be selling around 10-12 first team players. Or more.
I think thats a huge thing to do in one summer, maybe not even possible, and probably wont happen.
I wouldnt keep Kolarov, Yaya, Demchelis, Bony, Caballero, Delph, and big questions about Zaba, Sagna (if Pep keeps Zaba does he want an other older RB or a younger...), Navas, Nasri...
Extremely hard to manage such a big transfer window, only Gundogan seems to be very close to me now, good start but I hope a summer like we had at the start of Pellegrini era when Navas, Negredo, Fernandinho all were here around middle of June and the agreement about their transfers were made probably already in May.
So it should be a busy time for Txiki, can see we already will have 3-5 new players joined when still no one had left which will put pressure on us to start offloading them cheaper and cheaper.
I can see some of our rivals taking advantage of Chinese market with some crazy deals while we struggle to fight with Serie A clubs that we only get paid 10% of the fee but only with option to buy anyway lol.